Flutter Entertainment PLC (FLUT) shares plummeted 7.01% in after-hours trading following the release of its fourth-quarter financial results, which fell short of Wall Street expectations. The gambling giant, parent company of U.S. sportsbook FanDuel, reported adjusted earnings per share of $1.74, missing analyst estimates. Revenue for the quarter also came in below forecasts.

The decline was driven by a significant miss in the company's forward-looking guidance for its crucial U.S. business. Flutter now expects full-year 2026 revenue of $7.8 billion in the U.S., a nearly 10% shortfall from the $8.7 billion analysts had anticipated. CEO Peter Jackson attributed part of the weaker-than-expected results to a "somewhat boring NFL season," which he said left bettors uninspired to make the long-shot parlay bets that are central to the company's U.S. operations.

Furthermore, the company noted that moderated customer activity and handle trends in the U.S., which were more pronounced for FanDuel than its competitors, have continued into 2026. Flutter also expects its investment in the emerging prediction markets category to be at the upper end of its previously guided range, adding to investor concerns about near-term profitability.